@inproceedings{JCDL-2009-BethardWBMS,
	author        = "Steven Bethard and Philipp G. Wetzler and Kirsten R. Butcher and James H. Martin and Tamara Sumner",
	booktitle     = "{Proceedings of the Ninth Joint Conference on Digital Libraries}",
	doi           = "10.1145/1555400.1555436",
	isbn          = "978-1-60558-322-8",
	pages         = "221--230",
	publisher     = "{ACM}",
	title         = "{Automatically characterizing resource quality for educational digital libraries}",
	year          = 2009,
}